Invention of egg breaker and separator machine. Eggs run through a jig-saw, pulled through a vacuum in the factory. Eggs then pumped into a reservoir. Shells are discarded followed by diversification of yolk and egg-white into different compartments.

The Games of the X Olympiad held in Los Angeles, California. Women participate in the springboard diving contest during the summer olympics of 1932. A large crowd gathers to watch the games and cheer. Georgia Coleman does a layout back somersault dive into the water, then three other dives. Closeup view of a smiling Georgia Coleman, springboard diver. Next diver shown is Dorothy Poynton on the high dive, followed by closeup shots of Dorothy after her dives. Swimmers participate in the swimming championships, including American Eleanor Holm in competition with Bonnie Mealing from Australia in the Women's 100 meter backstroke. Closeup shot of Eleanor Holm outside the pool. Americans take the lead in the games. Men participate in the 2000 meter 8 oar she crew shell boat race. American team is made up of team from the University of California. The crew shell race underway on Alamitos Bay in Long Beach California. The University of California team surges at the end to beat the team from Italy. Oil rigs and oil derricks seen in the background on shore after the crew race.

World War I scenes of U.S. Army airplanes in action at the front. A picture of U.S. Army Major Henry A. (Hap) Arnold and California Forester Kurt Dubois, who, together, started the fire patrol practice by United States Army aircraft in1919. Army flyers lined up on a field. Army Curtis JN-4 (Jenny) airplanes in flight as smoke rises from the forests below. Weighted messages with ribbons attached, being dropped by pilots while in flight to inform about a forest fire. Later on after the installation of radios a pilot sends a message on a radio set in case of a forest fire. In 1920s, Crawler tractors used to skid logs out of the forest. In 1925, tractor with a blade was developed and used to build forest roads. In 1932, a Bulldozer being used to create firebreaks during a Southern California fire. A fire plow in operation.

Hard times in the Great Depression led to formation of The Bonus Army. American veterans of World War 1 march on streets of Washington DC, carrying a large poster demanding immediate cash redemption their "bonus" service certificates awarded by Congress in 1924 (but not lawfully payable until 1945). Army Chief of Staff, General Douglas MacArthur, ordered by President Hoover, to clear the Bonus Army encampments, is seen standing in a street surrounded by several U.S. Army troops. People watch from sidewalks as a contingent of U.S. Army cavalry rides down the street. U.S. Army M-1917 tanks roll down Pennsylvania Avenue in July 1932. Bonus marchers and others watch from Lafayette Park in background. Scene shifts to the 1932 Democratic Party Convention in Chicago Stadium, Chicago, where delegates cheer after nominating Franklin D. Roosevelt as their Presidential candidate. Roosevelt seen waving from the podium. Migrant farm workers seen at temporary, dilapidated dwellings in close quarters, and sitting at a campfire, some with sad and desperate faces. Migrant farm workers' cars on the road, piled high with family belongings during westward migration. Migrants riding atop an open railroad freight car. Two men share a copy of the "Epic News" newspaper (published by supporters of Upton Sinclair and the End Poverty Movement in Los Angeles and central California). Narrator describes programs of the Works Progress Administration (WPA) and the Civilian Conservation Corps (CCC). Construction workers ignite demolition charges during construction of Boulder Dam (aka Hoover Dam and officially so-named in 1947). Glimpse of President Roosevelt at the site in an open car, for its dedication on September 30, 1935. Construction workers engaged in building the dam. Another shot of President Roosevelt in his open car. Towers being erected to carry electric power from the dam's hydroelectric generators. President Franklin D. Roosevelt smiling broadly at the formal dedication ceremony, September 30, 1935. Controlled discharges of water through the dam. Views of the Boulder Dam hydroelectric generating station. Oil well rigs or oil derricks at work during construction at night. People at work in fabric mills or textile mills, and in a print shop

Preparations made for participants and visitors to the 1984 Summer Olympics in Los Angeles, California. An aircraft in flight. Automobile traffic on road. Skyscrapers of Los Angeles. A crowded sidewalk. Cars parked in a parking lot. The air hostess announces to people aboard aircraft. Sketches of the famous personalities of Los Angeles. A trailer truck being driven off in the foreground. Traffic on fly overs. Houses in the city. Palm trees on a beach area. Cars parked in front of shops. People at a market place. A boy dances in a toprock breakdancing style. People watch the boy perform his break dance. People dance wearing skates. A woman dances. A man plays piano in an open ocean front market. A man performs a stunt and weightlifters workout lifting heavy weights at Venice Beach. Boys play racket sports. People ride bicycles and skate on a beach. An aircraft in flight and the airplane preparing to land at Los Angeles International Airport. People gathered at the 1932 Olympics watching runners leap hurdles in a race. Seats in stadium at the Los Angeles Memorial Coliseum. Entrance of the Los Angeles Memorial Coliseum . A man plays bugle. People in a stadium watch the horse race. Exteriors of the University of Southern California (USC) and the University of California, Los Angeles (UCLA).